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	<title>Problem Set -- page 16 -- 衡阳八中OJ离线版-2012-02-29</title>
<h3 align='center'><a href='list-1.html'>1</a>&nbsp;<a href='list-2.html'>2</a>&nbsp;<a href='list-3.html'>3</a>&nbsp;<a href='list-4.html'>4</a>&nbsp;<a href='list-5.html'>5</a>&nbsp;<a href='list-6.html'>6</a>&nbsp;<a href='list-7.html'>7</a>&nbsp;<a href='list-8.html'>8</a>&nbsp;<a href='list-9.html'>9</a>&nbsp;<a href='list-10.html'>10</a>&nbsp;<a href='list-11.html'>11</a>&nbsp;<a href='list-12.html'>12</a>&nbsp;<a href='list-13.html'>13</a>&nbsp;<a href='list-14.html'>14</a>&nbsp;<a href='list-15.html'>15</a>&nbsp;<span class=red>16</span>&nbsp;<a href='list-17.html'>17</a></h3>
<center><table id='problemset' width='90%'>
<thead><tr align='center' class='evenrow'><td width='5'></td><td width='10%' colspan='1'><form action='problem.php' onsubmit='jump2prob(); return false;' >Problem ID<input id='jump2prob-id' type='text' name='id' size=5><input type='submit' value='GO' ></form></td><td width='90%' colspan='4'><form onsubmit='searchInTable(2); return false;' >Search<input id="search-content-id" type='text' name='search'><input type='submit' value='Search' ></form></td></tr><tr align=center class='toprow'><td width='5'><td style="cursor:hand" onclick="sortTable('problemset', 1, 'int');" width=10%><A>Problem ID</A><td width='60%'>Title</td><td width='20%'>Source</td><td style="cursor:hand" onclick="sortTable('problemset', 4, 'int');" width='5%'><A>AC</A></td><td style="cursor:hand" onclick="sortTable('problemset', 5, 'int');" width='5%'><A>Submit</A></td></tr></thead>
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<tr align=center class='toprow'><td width='5'><td style="cursor:hand" onclick="sortTable('problemset', 1, 'int');" width=10%><A>Problem ID</A><td width='60%'>Title</td><td width='20%'>Source</td><td style="cursor:hand" onclick="sortTable('problemset', 4, 'int');" width='5%'><A>AC</A></td><td style="cursor:hand" onclick="sortTable('problemset', 5, 'int');" width='5%'><A>Submit</A></td></tr>
</thead><tbody>
<tr class='evenrow'><td></td><td align='center'>2500</td><td align='left'><a href='problem-2500.html'>幸福的道路</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2500&jresult=4'>34</a></td><td align='center'><a href='status.php?problem_id=2500'>76</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2501</td><td align='left'><a href='problem-2501.html'> [usaco2010 Oct]Soda Machine</a></td><td align='center'>Gold</td><td align='center'><a href='status.php?problem_id=2501&jresult=4'>42</a></td><td align='center'><a href='status.php?problem_id=2501'>66</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2502</td><td align='left'><a href='problem-2502.html'>清理雪道</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2502&jresult=4'>20</a></td><td align='center'><a href='status.php?problem_id=2502'>46</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2503</td><td align='left'><a href='problem-2503.html'>相框</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2503&jresult=4'>8</a></td><td align='center'><a href='status.php?problem_id=2503'>9</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2504</td><td align='left'><a href='problem-2504.html'>间谍</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2504&jresult=4'>1</a></td><td align='center'><a href='status.php?problem_id=2504'>1</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2505</td><td align='left'><a href='problem-2505.html'> tickets</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2505&jresult=4'>15</a></td><td align='center'><a href='status.php?problem_id=2505'>16</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2506</td><td align='left'><a href='problem-2506.html'>calc</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2506&jresult=4'>65</a></td><td align='center'><a href='status.php?problem_id=2506'>141</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2507</td><td align='left'><a href='problem-2507.html'>untitled</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2507&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2507'>8</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2508</td><td align='left'><a href='problem-2508.html'>简单题</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2508&jresult=4'>31</a></td><td align='center'><a href='status.php?problem_id=2508'>72</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2509</td><td align='left'><a href='problem-2509.html'>送分题</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2509&jresult=4'>6</a></td><td align='center'><a href='status.php?problem_id=2509'>14</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2510</td><td align='left'><a href='problem-2510.html'>弱题</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2510&jresult=4'>15</a></td><td align='center'><a href='status.php?problem_id=2510'>32</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2511</td><td align='left'><a href='problem-2511.html'>信心题</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2511&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2511'>3</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2512</td><td align='left'><a href='problem-2512.html'>Groc</a></td><td align='center'>2011福建集训</td><td align='center'><a href='status.php?problem_id=2512&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2512'>3</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2513</td><td align='left'><a href='problem-2513.html'>菜园</a></td><td align='center'>2010福建集训</td><td align='center'><a href='status.php?problem_id=2513&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2513'>4</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2514</td><td align='left'><a href='problem-2514.html'>取石子游戏</a></td><td align='center'>2010福建集训</td><td align='center'><a href='status.php?problem_id=2514&jresult=4'>5</a></td><td align='center'><a href='status.php?problem_id=2514'>8</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2515</td><td align='left'><a href='problem-2515.html'>Room</a></td><td align='center'>2010福建集训</td><td align='center'><a href='status.php?problem_id=2515&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2515'>3</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2516</td><td align='left'><a href='problem-2516.html'>电梯</a></td><td align='center'>2010福建集训</td><td align='center'><a href='status.php?problem_id=2516&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2516'>6</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2517</td><td align='left'><a href='problem-2517.html'>矩形覆盖</a></td><td align='center'>2010福建集训</td><td align='center'><a href='status.php?problem_id=2517&jresult=4'>8</a></td><td align='center'><a href='status.php?problem_id=2517'>23</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2518</td><td align='left'><a href='problem-2518.html'>[Shoi2010]滚动的正四面体</a></td><td align='center'>Day1</td><td align='center'><a href='status.php?problem_id=2518&jresult=4'>14</a></td><td align='center'><a href='status.php?problem_id=2518'>38</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2519</td><td align='left'><a href='problem-2519.html'>[Shoi2010]电脑网络</a></td><td align='center'>day1</td><td align='center'><a href='status.php?problem_id=2519&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2519'>0</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2520</td><td align='left'><a href='problem-2520.html'>[Shoi2010]扫雷机器人</a></td><td align='center'>Day2</td><td align='center'><a href='status.php?problem_id=2520&jresult=4'>1</a></td><td align='center'><a href='status.php?problem_id=2520'>2</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2521</td><td align='left'><a href='problem-2521.html'>[Shoi2010]最小生成树</a></td><td align='center'>day2</td><td align='center'><a href='status.php?problem_id=2521&jresult=4'>37</a></td><td align='center'><a href='status.php?problem_id=2521'>85</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2522</td><td align='left'><a href='problem-2522.html'>[Shoi2010]团队游戏</a></td><td align='center'>Day2</td><td align='center'><a href='status.php?problem_id=2522&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2522'>0</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2523</td><td align='left'><a href='problem-2523.html'>[Ctsc2001]聪明的学生</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2523&jresult=4'>14</a></td><td align='center'><a href='status.php?problem_id=2523'>18</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2524</td><td align='left'><a href='problem-2524.html'>[Poi1997]Rek 蚂蚁的递归访问</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2524&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2524'>1</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2525</td><td align='left'><a href='problem-2525.html'>[Poi2011]Dynamite</a></td><td align='center'>鸣谢 Object022</td><td align='center'><a href='status.php?problem_id=2525&jresult=4'>3</a></td><td align='center'><a href='status.php?problem_id=2525'>11</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2526</td><td align='left'><a href='problem-2526.html'>[Poi2011]Inspection</a></td><td align='center'>鸣谢 Object022</td><td align='center'><a href='status.php?problem_id=2526&jresult=4'>10</a></td><td align='center'><a href='status.php?problem_id=2526'>13</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2527</td><td align='left'><a href='problem-2527.html'>[Poi2011]Meteors</a></td><td align='center'>鸣谢 Object022</td><td align='center'><a href='status.php?problem_id=2527&jresult=4'>15</a></td><td align='center'><a href='status.php?problem_id=2527'>31</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2528</td><td align='left'><a href='problem-2528.html'>[Poi2011]Periodicity</a></td><td align='center'>鸣谢 Object022</td><td align='center'><a href='status.php?problem_id=2528&jresult=4'>6</a></td><td align='center'><a href='status.php?problem_id=2528'>6</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2529</td><td align='left'><a href='problem-2529.html'>[Poi2011]Sticks</a></td><td align='center'>鸣谢Kac</td><td align='center'><a href='status.php?problem_id=2529&jresult=4'>33</a></td><td align='center'><a href='status.php?problem_id=2529'>68</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2530</td><td align='left'><a href='problem-2530.html'>[Poi2011]Party</a></td><td align='center'>鸣谢 Object022</td><td align='center'><a href='status.php?problem_id=2530&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2530'>2</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2531</td><td align='left'><a href='problem-2531.html'>Vijos 1478 囧囧的作业</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2531&jresult=4'>5</a></td><td align='center'><a href='status.php?problem_id=2531'>5</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2532</td><td align='left'><a href='problem-2532.html'>[Cerc2010]Costing Spells</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2532&jresult=4'>5</a></td><td align='center'><a href='status.php?problem_id=2532'>8</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2533</td><td align='left'><a href='problem-2533.html'>[Poi2001]Nas Necklaces项链</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2533&jresult=4'>1</a></td><td align='center'><a href='status.php?problem_id=2533'>7</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2534</td><td align='left'><a href='problem-2534.html'>Uva10829L-gap字符串</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2534&jresult=4'>3</a></td><td align='center'><a href='status.php?problem_id=2534'>4</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2535</td><td align='left'><a href='problem-2535.html'>[Noi2010]Plane 航空管制2</a></td><td align='center'>鸣谢Benz</td><td align='center'><a href='status.php?problem_id=2535&jresult=4'>14</a></td><td align='center'><a href='status.php?problem_id=2535'>25</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2536</td><td align='left'><a href='problem-2536.html'>[Neerc2008]Clock</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2536&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2536'>0</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2537</td><td align='left'><a href='problem-2537.html'>[neerc2007]Language Recognition</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2537&jresult=4'>5</a></td><td align='center'><a href='status.php?problem_id=2537'>10</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2538</td><td align='left'><a href='problem-2538.html'>[Ctsc2000]公路巡逻</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2538&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2538'>3</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2539</td><td align='left'><a href='problem-2539.html'>[Ctsc2000]丘比特的烦恼</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2539&jresult=4'>19</a></td><td align='center'><a href='status.php?problem_id=2539'>83</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2540</td><td align='left'><a href='problem-2540.html'>[Ctsc2000]快乐的蜜月</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2540&jresult=4'>3</a></td><td align='center'><a href='status.php?problem_id=2540'>8</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2541</td><td align='left'><a href='problem-2541.html'>[Ctsc2000]冰原探险</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2541&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2541'>3</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2542</td><td align='left'><a href='problem-2542.html'>[Ctsc2001]终极情报网 </a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2542&jresult=4'>9</a></td><td align='center'><a href='status.php?problem_id=2542'>41</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2543</td><td align='left'><a href='problem-2543.html'>[Ctsc2001]逻辑电路最优设计</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2543&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2543'>2</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2544</td><td align='left'><a href='problem-2544.html'>[Ctsc2001]排序二叉树</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2544&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2544'>2</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2545</td><td align='left'><a href='problem-2545.html'>[Ctsc2002]丹奇方块</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2545&jresult=4'>1</a></td><td align='center'><a href='status.php?problem_id=2545'>2</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2546</td><td align='left'><a href='problem-2546.html'>[Ctsc2002]购房计划</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2546&jresult=4'>1</a></td><td align='center'><a href='status.php?problem_id=2546'>1</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2547</td><td align='left'><a href='problem-2547.html'>[Ctsc2002]玩具兵</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2547&jresult=4'>22</a></td><td align='center'><a href='status.php?problem_id=2547'>53</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2548</td><td align='left'><a href='problem-2548.html'>[Ctsc2002]灭鼠行动</a></td><td align='center'>2012国家集训队Round 1 day3</td><td align='center'><a href='status.php?problem_id=2548&jresult=4'>5</a></td><td align='center'><a href='status.php?problem_id=2548'>8</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2549</td><td align='left'><a href='problem-2549.html'>[Ctsc2001]最优据排序二叉树</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2549&jresult=4'>4</a></td><td align='center'><a href='status.php?problem_id=2549'>4</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2550</td><td align='left'><a href='problem-2550.html'>[Ctsc2004]公式编辑器</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2550&jresult=4'>1</a></td><td align='center'><a href='status.php?problem_id=2550'>7</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2551</td><td align='left'><a href='problem-2551.html'>Tablouri Young</a></td><td align='center'>Romania2002</td><td align='center'><a href='status.php?problem_id=2551&jresult=4'>12</a></td><td align='center'><a href='status.php?problem_id=2551'>42</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2552</td><td align='left'><a href='problem-2552.html'>Zju2253 Fill the Grid</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2552&jresult=4'>12</a></td><td align='center'><a href='status.php?problem_id=2552'>18</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2553</td><td align='left'><a href='problem-2553.html'>[BeiJing2011]禁忌</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2553&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2553'>4</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2554</td><td align='left'><a href='problem-2554.html'>Color</a></td><td align='center'>Ctsc模拟赛By 洁妹</td><td align='center'><a href='status.php?problem_id=2554&jresult=4'>19</a></td><td align='center'><a href='status.php?problem_id=2554'>46</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2555</td><td align='left'><a href='problem-2555.html'>SubString</a></td><td align='center'>Ctsc模拟赛By 洁妹</td><td align='center'><a href='status.php?problem_id=2555&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2555'>3</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2556</td><td align='left'><a href='problem-2556.html'>Move</a></td><td align='center'>Ctsc模拟赛By 洁妹</td><td align='center'><a href='status.php?problem_id=2556&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2556'>3</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2557</td><td align='left'><a href='problem-2557.html'>[Poi2011]Programming Contest</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2557&jresult=4'>7</a></td><td align='center'><a href='status.php?problem_id=2557'>25</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2558</td><td align='left'><a href='problem-2558.html'>[Poi2000]迷宫的墙</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2558&jresult=4'>4</a></td><td align='center'><a href='status.php?problem_id=2558'>5</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2559</td><td align='left'><a href='problem-2559.html'>[Poi1998] AB-words Abs</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2559&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2559'>1</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2570</td><td align='left'><a href='problem-2570.html'>[NOI2000]算符破译</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2570&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2570'>10</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2571</td><td align='left'><a href='problem-2571.html'>Getting Rid of the Holidays </a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2571&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2571'>3</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2572</td><td align='left'><a href='problem-2572.html'>Zju1017 The Bermuda Triangle</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2572&jresult=4'>3</a></td><td align='center'><a href='status.php?problem_id=2572'>5</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2573</td><td align='left'><a href='problem-2573.html'>Zju1155 Triangle War</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2573&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2573'>6</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2574</td><td align='left'><a href='problem-2574.html'>推箱子2</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2574&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2574'>7</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2575</td><td align='left'><a href='problem-2575.html'>外公的难题</a></td><td align='center'>曙光OI第四次比赛</td><td align='center'><a href='status.php?problem_id=2575&jresult=4'>2</a></td><td align='center'><a href='status.php?problem_id=2575'>3</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2580</td><td align='left'><a href='problem-2580.html'>[Usaco2012 Jan]Video Game </a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2580&jresult=4'>11</a></td><td align='center'><a href='status.php?problem_id=2580'>14</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2581</td><td align='left'><a href='problem-2581.html'>[Usaco2012 Jan]Cow Run</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2581&jresult=4'>3</a></td><td align='center'><a href='status.php?problem_id=2581'>4</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2582</td><td align='left'><a href='problem-2582.html'>[Usaco2012Jan]Bovine Alliance</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2582&jresult=4'>26</a></td><td align='center'><a href='status.php?problem_id=2582'>30</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2583</td><td align='left'><a href='problem-2583.html'>PKU3127 Lineland's Airport</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2583&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2583'>1</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2584</td><td align='left'><a href='problem-2584.html'>[Wc2012]memory</a></td><td align='center'>鸣谢 PTY</td><td align='center'><a href='status.php?problem_id=2584&jresult=4'>33</a></td><td align='center'><a href='status.php?problem_id=2584'>90</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2585</td><td align='left'><a href='problem-2585.html'> 世纪大战</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2585&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2585'>1</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2586</td><td align='left'><a href='problem-2586.html'>[Cerc2009](False)faces</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2586&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2586'>19</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2587</td><td align='left'><a href='problem-2587.html'>[Ceoi2011]Team</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2587&jresult=4'>14</a></td><td align='center'><a href='status.php?problem_id=2587'>26</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2588</td><td align='left'><a href='problem-2588.html'>Spoj 10628. Count on a tree</a></td><td align='center'>鸣谢seter</td><td align='center'><a href='status.php?problem_id=2588&jresult=4'>7</a></td><td align='center'><a href='status.php?problem_id=2588'>28</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2589</td><td align='left'><a href='problem-2589.html'>Spoj 10707  Count on a tree II</a></td><td align='center'>鸣谢seter</td><td align='center'><a href='status.php?problem_id=2589&jresult=4'>10</a></td><td align='center'><a href='status.php?problem_id=2589'>49</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2590</td><td align='left'><a href='problem-2590.html'>[Usaco2012 Feb]Cow Coupons </a></td><td align='center'>Gold</td><td align='center'><a href='status.php?problem_id=2590&jresult=4'>19</a></td><td align='center'><a href='status.php?problem_id=2590'>33</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2591</td><td align='left'><a href='problem-2591.html'>[Usaco 2012 Feb]Nearby Cows</a></td><td align='center'>Gold</td><td align='center'><a href='status.php?problem_id=2591&jresult=4'>20</a></td><td align='center'><a href='status.php?problem_id=2591'>38</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2592</td><td align='left'><a href='problem-2592.html'>[Usaco2012 Feb]Symmetry</a></td><td align='center'>Gold</td><td align='center'><a href='status.php?problem_id=2592&jresult=4'>16</a></td><td align='center'><a href='status.php?problem_id=2592'>22</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2593</td><td align='left'><a href='problem-2593.html'>PKU205 Kid</a></td><td align='center'>Acm BeiJing 2004</td><td align='center'><a href='status.php?problem_id=2593&jresult=4'>1</a></td><td align='center'><a href='status.php?problem_id=2593'>1</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2594</td><td align='left'><a href='problem-2594.html'>[Wc2006]水管局长数据加强版</a></td><td align='center'>鸣谢Kac</td><td align='center'><a href='status.php?problem_id=2594&jresult=4'>5</a></td><td align='center'><a href='status.php?problem_id=2594'>13</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2595</td><td align='left'><a href='problem-2595.html'>[Wc2008]游览计划</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2595&jresult=4'>5</a></td><td align='center'><a href='status.php?problem_id=2595'>9</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2596</td><td align='left'><a href='problem-2596.html'>[Wc2007]疯狂赛车</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2596&jresult=4'>4</a></td><td align='center'><a href='status.php?problem_id=2596'>9</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2597</td><td align='left'><a href='problem-2597.html'>[Wc2007]剪刀石头布</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2597&jresult=4'>4</a></td><td align='center'><a href='status.php?problem_id=2597'>5</a></td></tr>

<tr class='evenrow'><td></td><td align='center'>2598</td><td align='left'><a href='problem-2598.html'>[IOI2011]garden</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2598&jresult=4'>4</a></td><td align='center'><a href='status.php?problem_id=2598'>10</a></td></tr>

<tr class='oddrow'><td></td><td align='center'>2599</td><td align='left'><a href='problem-2599.html'>[IOI2011]Race</a></td><td align='center'></td><td align='center'><a href='status.php?problem_id=2599&jresult=4'>0</a></td><td align='center'><a href='status.php?problem_id=2599'>10</a></td></tr>
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